9970805 has 16 divisors (see below), whose sum is σ = 12964224. Its totient is φ = 7318080.

The previous prime is 9970787. The next prime is 9970811. The reversal of 9970805 is 5080799.

It is not a de Polignac number, because 9970805 - 2⁸ = 9970549 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13352 + ... + 14078.

It is an arithmetic number, because the mean of its divisors is an integer number (810264).

Almost surely, 2^9970805 is an apocalyptic number.

It is an amenable number.

9970805 is a deficient number, since it is larger than the sum of its proper divisors (2993419).

9970805 is a wasteful number, since it uses less digits than its factorization.

9970805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 9970805 is about 3157.6581512254. The cubic root of 9970805 is about 215.2336022326.

The spelling of 9970805 in words is "nine million, nine hundred seventy thousand, eight hundred five".